Machine for patching pitch pockets



Aug. ll, 1925.

M. E. STEGER MACHINE Fon' PATGHING FITCH PocKETs Filed oct. s. 1923 1o sheets-snaai 1 ATTORNEY Aug. 11, 1925.

M. E. STEGER MACHINE FOR PATCHING FITCH POCKETS 10 Sheets-Sheet 2 Filed Oct. 5. 1923 NNN SN www @N @N wsmw INVENTOR M. E. Wege/z ATTORNEY Aug. 11,. 1925. i 1,549,691

M. E. STEGER MACHINE POR PATCHING PIhI'CH POCKETS Filed um.` 5, 192s 1o sheets-sheet 4 157 Z J7? J7? 177 Eiga- |NvENToR M E. 'eger.

ATTORNEY Aug. 1.1, 1925. 1,549,691

M. E. STEGER MACHINE FOR PATCHING PI'I-CH POCKETS Filed Oct. 5, 1923 10 Sheets-Sheet 5 -mnnp lVENToR ATTORNEY l" M. E. STEGER MACHINE FOR PATCHING PITCH POCKETS Aug. 11, 1925.

Filed Oct. 5, 19225 10 Sheets-Sheet ,6

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, INVENTOR ME. 'egen' SJJ AUNN ATTORNEY M. E. STEGER MACHINE FOR PATCHING PITCH POCKETS Aug. 11, 1925.

Filed Oct. 5. 1923` y l0 Sheets-Sheet '7 1o ,sheets-sheet INVENTOR ./P. c'eyef. B v

ATTORNEY M. E. STEGER MACHINE FOR PATCHING FITCH POCKETS Filed Oct( 5, 1923 @o www -EFL Aug. '11," 1925.

Aug`. ll, 1925.

INVENTOR .l1/l, E. egef.

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M. E. STEGER MACHINE FOR PATCHING FITCH POCKETS Filed Oct.. 5, 1923 wn@ INIAHnTL www WAR ,www www www NWN www1 .mdL

ATTORNEY Patented Aug. 1`1, 1925.

PATEN'rvv oFFlcl-z.

MARVIN EARL STEGER, oF MQCLEARY, WASHINGTON.

MACHINE Non EATCHINQITCH rocxE'rsf Application mea october 5,1923. semi No. 666,796.

To all whom 'it may concern:

Be it known that I, MARVIN E. STEGER, a citizen of the United States, residing at McCleary, in the' county of Grays Harbor and State of Washington, have invented a new anduseful Machine for Patching Pitch Pockets, of which the following is a spec- 1 iication.

The invention resides in the provision of an automatic machine for removingdefects from lumber and for applying'a suitable patch of good lumbervto the place from which the defect has been removed;

In the manufacture or milling of doors or like structures from Douglas Fir or-simi-y lar kinds of lumber, much diiiculty is encountered due to the presence in such Wood of numerous defects, principally pitch 'poele ets, which make it necessary' to discard thousands of feet 'of lumber as useless, or tol endeavor to practically patch such defects, by removing the defect and substituting an inlay of'sound Wood. v l

Itl has become the common practice in this art to thus patch thestock by hand andV it will befreadily understood that, While a ,y saving ofl thousands of Ifeet of stock is thus efected'this operation is a tedious one and very costly, due lto the great `number of Workmen necessary to carry out the various operations, also, as in the case of all operations wholly manual in their nature, productionis limited.

Une such method is to haveone man to cut out the pitch pocket or other defect, by hand or by automatic tool for that purpose alone, and to have him pile the stock on tables. Another man is kept busy cutting patchesto be inserted into the places from which the defects have been cut, and two additional men arelkept busy removing the stock from the tables, taking small brushes and gluing the grooves or cut-out pockets, laying aside the brushes and Ataking-the cut patches or plugs from boxes Where they have been placed by the cutter, inserting them. into,

the grooves by hand under the urge of a mallet, and finally by dressing down the plugs with block planes as some of the plugs do not fit properly. Thus it Willbe seen that at least four men are required at one point `of operation and Whose production of finished product is greatly limited by reason of the manner and nature of the operations they must perform.

Therefore it is the primary object of my invention to provide a Wholly automatic machine for cut-ting out pitch pockets or other defects from lumber and for inserting and i gluing patches of clear lumber into the pockets from which the defects have been cut and also for suitably trimming the said patches.y I

In its more detailed nature, the invention has for its object to provide a machine of the type stated and in which means is also provided fdr quickly and effectively adjusting the'machine for applying varied sizes of patches and in Which means-is also provided for adjusting the defect removing vmechanism to ensure perfect sized :pocket cutting and for compensating for Wear of such mechanism so as to provide for perfect cooperation of the pockets and the patch plugdimensi'ons at all times.

lVith the above and other objects in view that will hereinafterappear, the invention alsov resides in those novel details of construction, combination and arrangement of parts, all of which will be first fully described, then be specifically pointed out in the appended claims, reference being had to the accompanying drawings, in which:

Figure l is a right side elevation of the invention, the parts being at the inoperative position.

Figure 2 is a left side elevation of the machine, the parts being similarly positioned in Figure. 1.

Figure 8 is a plan view of the machine.

Figure 4 is a front elevation of the machine. I

Figure 5 is a diagrammatic right side elevation illustrating Vthe'normal movement of the levers and the parts there illustrated in effecting the short patch.

Figure 6 is an enlarged detail right side elevation of the feed box actuating` rocker cam and the means for locking and releasing the same, the table lock detent mechanism being also shown.

Figure 7 is a detail section on the line 7-7 of Figure 5.

F igu're 8 is a diagrammatic view similar to Figure and which illustrates the movement of the parts during the effecting of a long patch. y Figure t) is a diagrammatic left side elevationillustrating the cooperationof the chip breaker with the stock to be patched and the saw.

Figure 10 is a View similar to Figure 9 and illustrates the movement of the chip breaker as the saw is moved forward.

Figure 11 is` a detail right side elevation lillustrating the plunger carrying plates and the mechanism for locking the driving block to cause movement thereof and for releasing the same from movement. i

Figures 12, 13, Hand-15 are diagrammatic perspective views illustrating av pitch pocket or defect, showing the same removed by the saw, showing the appearance of a patch as applied, and showing a section through the patch as applied and illustrating its relation with the cut out formed by the saw.

Figure 16 is a diagrammatic view showing in full lines the manner in which a 'short defect is removed and in dotted lines the removal of a long defect.

Figure 17 is a somewhat diagrammatic right side elevation of thetable supporting standard and the mechanism for lifting the table and for returning it to its lowered position, opposite positions of the p arts being illustrated in .full and dot and dash lines.

Figure 18 is a left side elevation'of the main movable clutch box.

Figure 19 is a cross section taken on the line 19 19 on Figure 18. A

Figure 2O is a plan view of the clutch box adapted to be movable with the main table.

Figure 21 is a cross section taken on the line 21-21 on Figure 20.

Figure 22 is a detail perspective View of the saw head supporting bracket. i

Figure 23 is a plan view'of patch plug transferring deck, the cutter knife and the actuating mechanisms therefor, the plug transfer position being shown in dot and dash-lines.

Figure 24 is an enlarged section taken on the line 2Ll-211 on Figure 23.

Figure 25 is a detail plan view of al modiy fication of transfer deck abutment plate and rplunger structure.

Figure 26 is ,an enlarged detail cross section taken through the transfer deck abutment plate and the spring pressed plug holding plate cooperative therewith.

Figure 27 isvan enlarged elevation of the y cutter knife mechanism, parts of the wall of the main table and the knife slide operating detent being shown in section.

Figure 28 is an enlarged end View of the parts shown in Figure 27, part of the transfer deck and the main table shelf being shown in section.

Figure 29 is a detail cross section illustrating the lateral adjustability of the plunger head.

Figure 30 is a diagrammatic View illustrating the manner in which the individual patch plugs are severed from the patch stock strip and the relation of the plug with the portion removed by the saw.

Figure 81 is a detail cross section taken through the glue box.

Figure is an enlarged detail plan view illustrating the i'etraetible detent o-f the knife slide operating lever.

Figure '33 is a detail View 4of the rock cam arm. f

In the drawings, in which like numerals of reference indicate like parts in all of the figures, 1 represents the base structure upon which the various. mechanisms of the invention are mounted.

' A standard 2 is secured upon the base 1 and is adapted to support the work table 3 which is vertically movable, by reason of being slide and guide connected as at 4 to the standard 2, so that it may be moved upward with the stock to be patched thereupon to effect the operations necessary to remove the defects from such stock and for inserting an'd fixing sound patches thereinto, in a manner soon to be described. t

A pair of toggle levers 5 cooperate with the slide portion of the table 3 for the purpose of lifting the same to its operative position, and the toggle levers 5 are secured to the slide as at 6, secured to each other as at 7, and the remaining end of the adjacent one thereof is iixedly secured to a rock shaft 8 mounted in suitable bearings fixed to the base 1 so as to be moved with the shaft when it is rocked in a manner soon to be described, see Figures land 17. I

A release pedal 9 is mounted in suitable bearings secured to the base 1 in a manner whereby the lock end 10 thereof will engage a lock cam 11 secured upon the shaft 8 in a manner whereby the said release pedal will prevent the iock shaft 8 from rotating in the direction in which it normally tends to rock under the influence of the lever 12 fixed upon the said rock shaft and provided with an adjustable weight 13. v

Four uprights or supporting standards 14: are secured to the base 1 so as to form a supporting medium for a pair of parallel trackrods 15 secured in the upper endslof the opposing pairs of standards 14 and each opposing pair of uprights 14 are provided with a cross brace 16, the latter serving'to support a stationarysub-table or shelf 17 see Figures 1 and 4.

VA maintable 18 is supported, throughv the medium of a'plurality ofbearing ro-llers 19 fixed' thereto, to be slightly movable along theguide rods 15 in a manner and for the purpose later to be described, and apair of Qipositely disposed pendent anti-jump brackets 20 are fixed to the bottom of said /tableto prevent dslo-dgement of -the table from the said guide rods '15. The brackets 2O alsoact as abutmentsV for engaging stop brackets 21 secured to the guide bars 15 and 'adapted to limit movement of the tab-le in that particular direction for-a will be later apparent. A supporting Wall or bracket 22 is supported above the base 1 by end supports 23 secured tothe base.l This wall 22 is pro-vid, ed with a long slot 24 adapted to guide a master vcross head block 25 reciprocable therein, by reason of its pivotal connection with the pitman 26and the cooperating pivotal connection of that pitman with the crank disk 27 secured upon to rotate with the cross shaft 28 rotatable in suitable bearings 29 fixed to the basel.

A driven 'cross head or block 30 is also reciprocable, at times, in the longitudinal slot purpose which 24 and the last named cross head block has a pair of'scissors action gripper ,dogclutch members 3 1 pivoted thereto as at 32 and having the cross ends 33 thereof spring con- 7 nected as at 34 to tend. to force the gripper i dogs toward each other in gripping relation.

The ends 33 of the gripper dogs are shaped cam-like as at 35, so as to cooperate with the head of a. spreader cam 36 to be spread thereby, to normally hold the dogs 31 tothe out-of-clutch position. The spreader cam 36 is suitably guideda-s at 37 in guides fixed to the wall-22 and is provided with a reduced portion around whichtakes a coil spring 38 which acts, against the shoulder of the spreader cani and a bracket fixed to the position illustrated in Figure 1.

A pair of toggle links 39 is pivoted one to the spreader cam 36, the other to one of the Wall 22, to normally. force the said cam to the guide brackets 37 and together vto a toggle vbreaking lever 40 (pin and slot connected as at 41 to the wall 22 and provided with a heel 42 adapted to. be engaged by a heel portion 43 of a bell crank lever 44 fixed referred to.

A large diameter gear 46 is also ixedly secured upon the cross shaft 28 and rotary motion is imparted to this shaft 28 by reason of this gear 46 being driven by a pinion 47 secured upon another cross shaft 48 also having bearing in the bearings 29 which support the cross shaft 28. The cro-ss shaft 48 is driven throughthe medium of a large diameter pulley 49 over which takes a driving belt '50 driven by a small pulley 51 on the 52 supported drive shaft of the power motor as at 53 upon the base 1.

From the foregoing description, it will be readily apparent-that when one depresses the foot lever 9, therefore releasing its locked relation with the (za-1n 1'1 and permitting the weight 13 to effect a rocking of the shaft 8, in the direction indicated by the arrow in Figure 1, that not only will the toggle links 5 'be straightened to effect a lifting, to the operative position, of the worktable 3, but engagement of the 'heels 43 and 42 will eect movement of the toggle links 39 such as will retract the spreadercam 36 and permit the dog lclutch members 31 to close so as to be engaged by andI carried with the master block 2 5 through one cycle of operation, thait is, one reciprocation along the slot and back again to the position illustrated in Figure 1. Vhile the crank disk 27 rotates continuously and thus reciprocates the master block 25 at a speed of approximately sixty strokes to the minute, it should be understood that the machine functions only through a single cycle, as before described, the automatic release of the clutch dogs 3 1 from the master block 25, after a single reciprocation, 'being effected in a manner later to be described.

57 will be caused to oscillate and the shaft.

55, upon which they are liXed, to rock when the said block 30 reciprocates with the master block 25 in the manner hereinbefore described; The arm extension 57 is provided with a further extension 59 which is pin and slot connected to a drag or slide bar 60 suitably guided in bearings 61 secured to the base 1 so as to be dragged along over the base as the arm extension 57 is caused to oscillate back fortlrthrough a single cycle. Thisdrag bar 60 has pivoted there to a spring pressed dog (32 adapted to move in the plane of position of .the toe 45 of the bell crank 44. By reference to Figures 1 and 17 it will be apparent that as the drag bar 60 is moved in the direction of the Y full line arrow on Figure 17, the dog 62 will ridefreely under the toe 45, but when the drag bar moves in the oposite direction, in-

dicated by the dotted arrow on that figure, the dog 62 will engage the toe 45 in a manner such as will cause a rocking of the shaft 8 in a direction oppositeto that indicated by the arrow on F igure 1, and for the purpose of effecting a resetting of the parts to the position illustrated in said Figure 1.

For properly cutting out the pitch pockets, one of which is diagrammatically illustrated in Figure 12, I provide a circular saw 63 so normally positioned and of such dimensions that, when the table 3 is moved upward to its operative position, a cutting out of the pitch pocket will beV immediately effected in the manner illustrated diagrammatically in Figure 16, and in a manner also for providing a standard dimension cut out portion.

The saw,63 is mounted at the end of a cross shaft 64 rockably mounted in a saw head or cross bracket 65. A pair of carrier arms 66 are-provided and the same have one end thereof fixed to the saw head 65 and the other end thereof mounted upon a cross shaft 67 secured in the upper ends' of the arms 56. rlhe arms 66, by reason of their connection with the oscillatablc arms 56, serve to effect movement of the saw 63 upward vout of the groove it outs and out of the way of the operator manipulating the stock to be patched, by reason of the cooperation of thesaw head 65, through a bracket 68 secured thereto and which is forwardly ex- Another arm 72 is secured upon the cross' shaft to be oscillated when the same is rocked and it will be observed that the said arm is of exactly half the length of the arms 56 for a purpose later to be explained. This arm cooperates with a normally parallel lever arm 73, the latter being connected with the arm 72 through the medium of a link 74. The arm v73 is of a length equivalent to the length of the arms 56, the purpose for which will also be explained later, and the upper end of this arm 73 pivotally joins with a pitman arm 75, the purpose for which will later appear, and the lower end thereof pivotally connects with a link 76, guided by a bracket 77 secured to one of a pair of supporting frames .78, the said link 76 being in turn pivotally joined with a rock lever 80 pivoted-at 81 to one of the standards 14 and which is pin and slot connected as at 82 to the' table 18. l

A rock shaft 83 is mounted upon the table 18 having one end Ithereof bearing in a bracket 84:.secured to the table and the other end thereof bearing in the upwardly projecting wall portion 85 of the said table, the wall making provision for an elevatedv shelf portion 86. A cam arm 87 is fixed upon the rock shaft 83 and is provided with a seat ortion 88 adapted to accommodate the ateral fingers 69 of the bracket 68 secured to the saw head 65 when these members are resting in their normal lowered position, see Figure 6, and this cam arm is also provided with an abutment shoulder 89 adapted to be engaged by the said fingers 69 when the saw is being elevated, as .indicated in Figure 5. Engagement of the fingers 69 withthe abutment shoulder 89 effects a rocking of the shaft 83 and which serves a purpose soon to be described.

The cam arm 87 is .also provided with a locking notch90 adapted to be engaged by a lock dog 91 slidably mounted in a bracket 92 secured to the table 18. The lock dog 91 is pin and slot connected as at 93 to a rocker head 94 pivotally mounted in suitable brackets upon the table 18, as shown, and which is spring held and limited as at 95 to the position shown in Figure 6. This rocker head 94 is provided with a pendent finger 96 which projects downwardly through a slot provided therefor in the table 18 A vertical supporting bracket 97 is secured to the. base 1 and supports a rock shaft 98, to one endof which is secured a slotted crank lever 99 which is pin connected as at 100 toI the slide 4 of the vertically movable table 3.

A crank lever 101 is secured to the opposite end of the cross shaft 98 and the saidcrank is pivoted to a latch release bar 102 slidable through a head member 103 vertically movable in and guided by a slotted bracket 104 secured'to the shelf 17, and is toggle-link connected as at 105 to a cross shaft 106 which has bearings in the bracket 104 and bracket 107 also secured to 'the bottom of the shelf 17. The opposite end of this cross shaft 106 is provided with a hand lever 108, the purpose for which and the toggle links 105 will later appear. The bar 102 is provided with a heel portion 109 adapted, when the said bar 102 is reciprocated, by reason of upward movement of the slide 4, to engage a cri. nk member 110 pivoted as at 111 to the shelf r17 and which is provided with a forked end v112 adapted to engage the pin 113`of a release dog 114 vertically guided as at 115. It will be readily apparent, by reference to Figure 1 that when the crank 110 is engaged by the heel 109 the release dog 114 will be forced upwardly into engaofement with the pendent finger 96 to thereby rock the head 94 to effect release of the lock dog 91.

Astop 116 is secured upon the upper face of the shelf 17 the purpose for which will later appear.

A small pulley is fixed upon the saw carrying cross shaft64 and thispulley is rotated to drive the saw 63 through the .medium of a beltillS, which takes over one side of the double pulley 119 loosely mounted uponthe cross shaft 67. rllhe pulley 119 is driven by a belt 120 which takes-,thereover and over oneside of a double pulley 121 which is in turn driven by the belt 122 which takes t-hereover and over the pulley 123 fixed upon the drive shaft of the power motor 52.

In the operation of my machine, the patch stock is automatically fed into the machine in a continuous strip, has an adhesive substance applied thereto while it is being fed into the machine, and is automaticalflycut to the proper patch lengths in the manner now to be described. For properly feeding the-patch stock into the machine, I provide a stationary clutch-box 124 in which is pivotally mounted pairs of opposing spring pressed clutch dogs 125 which are also toothed along -the patch stock engaging edges thereof and positioned and held in a manner for permitting free passage of the patch stock strip therethrough in one direcporting standards 14.

tion only. The clutch box 124is laterally 1 adjustable as at 126 and is supported upon a bracket 127 secured tothe adjacent sup- As before stated,- this clutch box 124 is stationary and acts, not as a patch stock feeding medium, but as a back check holding device.

For the actual feeding of the patch stock ito the machine in. the manner and degree necessary, IV provide a pair of clutch i boxes constructed similarly to the boxes 124 and'also laterally adjustable as at 126, see Figures 18 and 21'.

One of these boxes is designated 128 and is secured to the shelf portion 86of the table 18 as at 129 and moves only when the table moves, in the mannerand forthepurpose-Iater to be de scribed.

The other clutch box 130, which forms the principal patch stock feeding medium, is slidably mounted along a slide bar 131 secured at132to the clutch box 128, and for this purpose is secured thereto a slidable rack bar 133. A rack segment 134 is adapt- .ed to cooperate with the'slidable rack 133 and ,the said segment is pivotedv at 135 to the wall l85 of the table 18 and is adapted to be oscillate'd through the medium. of the slotted arm 136. The'arm 136is oscillated,

. by' reasonof its connection,l through the medium `of the--adjustably connected' bar,

v137, to another slotted arm 138 fixed to the end ofthe rock shaft83 so as to be oscil- 'is spring connected Yas at 139-to the wall 85 .of the -table 18 so as to normally tend to force thel clutch box 130r inthe direction in-v dicated by the arrow on Figure 2. It will be` 'remembered that this rock shaft 83 isthe one the soft carriage head 65. lThe tendency of action of the spring 139 -is coincident with that of the action on the abutmentv 89 as just referred to and the tension of this spring is such as to have a cushioning efect"w hen the lingers 69 return toftheir normal Aposition indicated "in Figure 1.

An adhesive substance applying mechanism` 140 is secured to the shelf 86 of the table 18 and this mechanism v may be inthe nature of `a hollow glue containingbox provided with apair of opposing rollers141 mounted onstub shafts 142 and adapted to pick up the adhesive substance@ and apply it to the patch stock strip as it is forced through t-he box.

A laterally movable table 143 is provided and the same includes a slide portion or extension 144 guided as at 145 uponfthe table 18 and this movable table includes an elelcut out portion formed by the saw 63. '149 designates an abutment plate secured to the deck 146 to cooperate with the spring pressed plate 148Y in holding the stock Ain the manner just explained, and thisv plate is in longitudinal alignment with a similarl guide plate 150 secured to the projected deck portion 86 of the table 18 by the bridge plate 151.

By reference to Figure v26 it will be observed that the plates 148 and 149 are each corrugated Vthrough their length so that they will not scrape the glue from the sides of the patch plug fed into and held therebetwen.

A slide member 152 is provided and is adapted to be guided by the adjacent edges 'of the decke 86 and 146 and this slide plate .152 has fixed `thereto a pair of curved in- 157 is pivoted to a bracket 158 secured to the table deck 86 andthe said lever is providedat one end with adow'nwardly projecting pin '159 -adapted to project into and lated when that shaft is rocked andjwhich b e acted uponby the cam groove 156 and at the other end by a-slide engaging detent 160, which is slidable in a recess 161 formed in the end of the lever 157 and which isV adapted to be spring' pressed outwardly and to vbe retracted :by reason of the action of the link bracket 158.` Asthe lever 157is moved by action of the cam in the direction indiv162 connected theretoand as at 163to the7 Vsame to the cutting position until the link 62 has retracted the said detent to a point where it willino longer exercise its slide engaging function so that the knives may be quickly returned to their normal position by action of the spring clearly shown in Figure 27, so as to be out of the way when the patch stock is again fed past the knives.

'The purpose of the movable deck 146 is to receive the patch stock as it is fed, to hold it as it is cut and to transfer the same to a position immediately above the cut out portion formed by the saw 63 in the stock to be patchedl and to hold the same in such position until it has been driven home in a manner later to be described. For providing this movement of the deck 146 to the position referred to, and in timed relation to just succeed the cutting action of the knives and the removal upward of the saw 63 and immediately preceding the action of the plug insertingI mechanism, I provide a cam plate 164 adjustably secured as at 165 to a slide plate 166 guided as at 167 in suitable guides secured to the table 18. Pivotally secured to the cam plate164 as at 168 is a cam plate moving arm 169, the other end of which is connected to the cross shaft 67 so that when the arms 56 are oscillated movement of the cam plate will be effected. The cam plate '164 is providedwith a cam groove 17 O and which includes a ldwell portion 171 to take care of the movement of the cam plate more than necessary to effect the desired moving of the deck 146. An operating lever 172 cooperates with the cam plate in effecting the movement of the deck 146 and" this operating lever .is adjustably fulcrumed as at 173 upon an overhead bracket 174 secured to the table 18 and the said lever is provided at one end with a pin 175 adapted to project into and be acted upon by the caml groove 170 and is provided is slidably guided as at 179. Another plate at its opposite end' with a Aslot connection for engaging the driver pin 176 of the slide 144.

Supported in the frames 78 are upper and lower guide rods 177 upon which a plate 178 180 is secured by connecting brackets 181 to the plate 178 to move therewith in the manner and for the purpose sconto be described. The plate 178 is provided with longitudinal slot 182 in ywhich is adapted to reciprocate a slide blockflp83 lwhich, has a pivotal connection as at 184, with the pitman hereinbeforel mentioned, and which is link connected as at 185 to a rocksliaft 186 which extends through the --said plate 178 and over and through the plate 180 where the said'shaft is again linkv connected as at 187 to a rocking lever 188 adjustably pivoted as at 189 to the plate 180 and which is provided with a double bifurcate'd end 190 adapted to engage a cross pin 191 through a plunger shaft 192 vertically movable in brackets 193 secured to the said plate 180. This plunger shaft 192 is provided at its lower end with a guidehead 194 in which is adjustably secured as at 195 the patch driving plunger head 196.

The plates 178 and 180 are adapted to be moved', through the medium of the pitman connection 75 with the levers hereinbefore referred to, forwardly to a position where the plunger head 196 will be positioned directly over the patch which it is adapted to drive home. Mechanism is provided whereby a portion of the movement of the pitman will be utilized to`longitudinally move the plates 178 and 180 andthe plunger, which the latter plate carries, Iand a small degree of continued movement of this pitman is utilized to vertically move said plunger to effect the actual -driving home of .the plunger, the said mechanism being such that this vertical movement of the plunger is effected without further longitudinal movement of the-parts mentioned.

To effect the above mentioned movements,

I provide block stop detent 197 which isr guided and abutted as at 198 and which is pivoted asfat 199 to a detent releasel link 200 which is in turn pivoted at 201 to the plate 178, as shown. The other end of the link is pivoted to a releasing bar 202 which is also linked at 203 to the plate178. This bar 202 has an abutting head 204 adapted to engage with a stop 205 secured to the table 18 just before the plates 178-180 have been moved to the point desired. B reference to Figure 11 it will be notice that asthe abutment 204 engages the'stop 205, the parts just described will be actuated, as

indicated in the 'dot and dash lines in that figure to effect a release of the detent 197 and thereby permit movement of the block 183 free of the plate 178 so that the said movement may properlyact-upon the links,

lshaft and lever hereinbefore described in a manner for effecting the downward movement ofthe plunger 196. A stop'y abutment 206 is secured toftheplate 178 imposition for being engaged bv the rear end of the. i releasing bar 202 so that when-the parts arel --indicated in full lines on .Figure 3 and in This bracket dotted fline's on Figure 2. serves to provide suitable guides for a ,vertically movable rod 209 which includes, at the lower end thereof, a work presser foot 21() andv-'hichis adapted to'be' forced downwartllyl to theposition illustrated in Figure 4 b a spring 211. "It will-be observed that the work p esser foot 210 normally rests at a position elow the cutting edge' ofthe saw 63 and at ab point in advancefof thel saw, and its relation with the saw and the verticallymovable'table 3 is such that when. the table is moved upwardly to the operative position, the said foot will engage the work and hold it tightly to its position upon by the saw 63.

A bracket 2'12I is adj ustably secured to the end saw head "65 adjacent the saw blade 63 l and this bracket serves to form a supporting medium for the guide bracket 213 which is pivoted thereto as at 214, and which is provided with*` an extended portion 215 adapted to project overl a portion of the bracket 213, as shown in Figures 4 vand 9. This extension 215 is slotted to permit the passing therethrough of an adjustment screw including an abutment head, and the said screw cooperates with a spring in forming a spring pressed and limited connection between the bracket extension 215 and the bracket 212, as indicated at. 216. The vertically movable rod is guided by the bracket 214 and a spring 218 cooperates with the bracket and the rod to force the latter normally downwardto the position indicated in dash lines 1n F1 full lines in Figure 9, and in a manner for forming -a yieldable connection which will yield under the upward pressureyof the stockl to be patched in the manner indicated in the dot and dash lines on Figure'9. A woodenchip breaker 219 issecured toy the bottom end of the rod 217 and is adapted to engage the stock to beV patched in a manner for preventing the said stock from chipping under action of the saw while the same is efectingits out, as illustrated in dot and re 9, from which it will also be observed'that the breaker head2l9 is provided with a suitable slotway to per` mit it to straddle the saw so as to more readilyefect its function. By reference to Figure 10. it will be readily seen that the construction and manner of mounting of this chip breaker mechanism is such that, when the saw l63 is effecting a long cut, as indicated by dot `and dash lines in that figure the said mechanism may yield and take the position illustrated in the said Figure 10. v

- The rock-cam 87 is provided with a slot 220 Afor accommodating a link 221 pivoted at one end of that cam and at the other end. to a table locking lever 222v which4 is in4 turn j, pivoted at 223 to the bottom face of the table 18 land which has its-other end bifurthe table while the defect is being removed cated to 'straddle a cross pin 225 on ythe lock detent 226 which is guided at 227 upon an abutment 228 secured to the table 18 which is adapted to enter, at times, one or the other of a pair ofvlock notches 2.29" Y As diagrammatically illustrated in Figure i 19 upper and lower guides 230 of keysteel may be provided, if desired, to aid in the guiding of the patch stock through the feeding boxes. 'j v Y Operation. I

In the operation of my invention, assuming the parts to'be at rest, as indicated in Figure 1, the operator first places the stock to be patched lupon the table \2 with the pitch pocket, seeifor example Figures 9 and 12, to be patched positioned'directly beneath vthedefect removing saw 63. He then presses down the foot lever 9, releasing its connec-` tion with the cam 11 and allowing the weighted lever to gravitate in the'direction of the arrow onFigure'l and thus causing the toggle levers to straighten and to force the table 3 to its elevated position illustrated in Idot and ldash lines on said Figure 17. As

the stock rises, -it is engaged land spring held 'i by the member-S210 and 219 and the cutting out of the pitch pocket is effected, as indicated in Figures 13, 16 and 17. Simultane ously with the lifting of the slide 4 and the table 3, the lever 99is actuated which causes, through lever 102, upward movement of the release dog, 114, by` reason of ,which thel lock dog 91 is released from engagement y with the cam 87. Simultaneously with this action just explained, thetoggles 39 have been broken, as indicated in F igure 17 andV to'grlp and the clutch ldogs 31 permitted lock with the master block 25, -which is being driven through the medium of the crankV disk 27 and pitman 26, thus causing the arms' 56 to be Arocked forwardly and, by reason of the arms 66, effecting an'upward lifting of the saw head 65 guided by 'the cam :gr-ooves 70 and causing a rocking of the shaft 83 thro-ugh approximately onesiXth of a` revolution. The saw having effected its defect vremoving function is thus,

lifted out of the way of other mechanism. The rocking of the shaft 83 effects, through the lever connections 1364-138 with the segment 134 and its cooperating r ck, a forward-movement of the clutch oX 130 of about three anda half tofour inches, so thatlwhen the saw carriage returns to its normal position guided' 4down the grooves 70, and the` box 130 returnsfto its. normal position by reason of the reversal of the 'action just explained, the patch stock strip will vbefedjinto the machine a distance equivalent to the distance the clutch bov has moved forwardly.

SimultaneouslyA with the movement of the saw carriage, forward movement of the cam plate 164 is effected through the pitman arm 169, thus giving lateral -movement of the deck 146 by reason of the operating lever,

connection 172therewith and with the said deck, to effect theproper transferring of the patch block held by the said deck to a position immediately above the saw kerf formed, in removing the defect. It will be noticed that the start of the cam groove 170 includes a short dwell portion sufficient to permit the saw 63 to carry up a sufficient distance to clear the deck preceding its full movement to the transfer position.

Simultaneously with the movement of the deck 146, the plates 178 and 180 are being moved by reason of the pitman arm connection 75 therewith and with the arms 73 and 72. It will be observed that the arms 73 being of a length equivalent to the arms 56 and the same being, at the adjustment' now being described, xedly pivoted at its lower end, the movement of this arm will be the same as the movement of the said arm 56, this being truein all caseswliei'e a short patch is being applied. By reason of the locked condition of the detent 197, the pitman 75 carries the said .plates forwardly until the plunger head 196 is almost directly over the saw kerf at which point the stop 205 will be engaged and a release of the detent 197 effected, whereupon further forward movement ofthe plates will cease and the continued forward motion of the pitman 7 5 will cause plunger action on the plunger rod 192 and 'head 196 to effect the ,driving home of the patch plug from its frictionally held position in the Aouter end of' the deck 146, see Figures 1, 5 and 11.

On the return rock of the arms 56-57, the saw head 65 will be returned to its normal position, the rock shaft 83 rocked back to Y its normal position and locked by the dog 91, the saw lcarriaggge being cushioned by the spring 139 on its return action, and by reason of thevdog 62 engagingthe toe 45 and rocking the shaft 80, as indicated in Figure 17, the table 3 will be again lowered to its normal position and the clutch dogs 31 released andjthe'parts `again set at rest,

with theexception of the driving transmissions, as shown in Figure 1.

` .The foregoing description has all related to the operation of the machine for applying a' short patch, that is a patch of approximately three and a half inches in length. It should be observed that in this form, the brackets 20-21 abutting, nomovementof the .ta-ble 18 rearwardly is permitted, andv the position'of the lever 80 and link 76 being relatively stationary, the arm 73 functhe machine for applying such a long patch in the same effective manner as a short patch is applied.

When the operator desires to apply such longv patch, it is only necessary for him tof move the hand lever 108 slightly forwardly so as to manipulate the toggle links 105 to effectjthe adjustment of the arms 102 to the position illustrated in Figures 6 and 8, from which it will be readily observed that the heel vportion 9 thereof will be positioned in a manner for freely passing the crank member 110 without engaging the same with the resultant immediate lrelease of the lock dog 91. l' With the parts in this adjusted position, whenthe table 3 is lifted to elevate the stock tobe patched into engagement with the defect cutting saw 63, the upward movement of the slide 4 will not effect a releasing of the lock dog 91 for reasons above described, and the cam 87 thus remaining locked against movement such as will permit the saw carriage 65 to ride upward guided by the guide groove 70, the table 18 will be caused to move forwardly two inches, as is illustrated in Figure 8, by the dot and dash lines, this movement being effected directly through the crank arms 56 and the saw carriage carrying arms66 `acting through the fingers 69 directly against the abutment 89. The table is limited to two inches of movement, the two inches additional movement necessary tol effect the additional cut of the saw to make a five anda half inch cut, see Figures 8, 10 and. 16, by the stop 116 which engages the finger 96 after it has passed freely over the release dog 114, as is indicated by dot and dash lines on the said Figure 8. It should be understood that the clutch box 128 being fixed to thetable moves therewith, this being the only time-that this box does move, and is thus caused to slip along the patch stock strip a distance of two inches.

By reason of the fact that three and ahalf inches of the patch stock strip is already in position to be held by the deck 146 while and after being cut by the knives 153, see Figure 23, this ,two inch movement of the table, which, of course, carries the deck 146 and all the `cooperating mechanism with it, effects aI sliding of the plug holding elements Vof. the deck and the cooperative mechanism referred to along the strip a distance of two inches so thatthe five and a half inches of stock necessary for the long patch will be cut when the knives are mal position, the clutch box 128 effects a corresponding feed of the patch stock strip so that the same will be in` normal relation with the knives and deck 146 forthe next operation whether it be a three and a half inch patch that is to be made or a five and a half inches patch. ,I

From the above description, it should be clear how the five and a -half inch'cut is made and how the live and a halfinch patch plug is fed, it being cut in the same manner that the short patch is cut. In this adjustment of the machine, itis necessary, 'of course, to cause theplates178 and 180 land the plunger head 195 carried thereby to travel the additional twovyinches made necl essary by movement of the table. By reference to Figure 8, it will be readily under-I stood how this is possible. The two inches of forward movement of the table 18 causes the'rock lever 80 to rock, as is indicated' by the dot and dash'lines on that figure and,`

by reason of thus moving the lower pivot of the lever 73 rearwardly and the action .against the center pivot of this lever exerted by the half-length arm 7 2 and the link 4, the .upper end of this lever 73 and which acts upon. the pitman 75 which drives the Y plates 178 and 180v as beforedescribed, will be compounded so thaty the two inches of movement of the table 18 or rather the initial two linches of movement of the arms 56 will Aeitlect'a four inch-movement of thepitman Vand the plates locked thereto by the detent 197.

j The remainder of the mechanisms ofthe machine functioning exactly as they `do in applying the three and a half inch patch, further 'description of the operation is deemed unnecessary. Q Y

Byv reference to' Figure 22 it will be observed that the bracket 68 is vertically adjustably secured to thesaw carriage' 65. By thus 'adjusting the relative 'positlon of the bracket 68, the relation of the saw- 63 with the stock to be patched may be slightly varied by taking up wear of the saw, so that 'the groove cutjthereby will always be per- -fectly accurate. n

' It willbe observed from Flgures 23 and 30 that as the knives cut" the patch plug from the .patch stock strip there 1s a slight degree of waste, due to the small piece cut out, and thus making it necessary to feed into the machine at each interval, an equivalent excess of patch stock so that the patch plug cut wilL exactly match the cut made by the saw. By reason of, the adjustable connection between the slotted arms 136 and 138by the rod '137 accurate adjustment of these partsl is readily effected for ensuring absolute accuracy of the patch stock feed.

It will also be obserited that the. movement of the chipper head 219 into the saw 63 is adjustably limited as at 216 toprevent the same from going toov far into the said saw. The relation of the lock dog 91 with .the lock notch 90 of the cam 87V is also adjustably limited in a manner` whereby perfect adjustment maybe ei'ected as at 95.

The clutch boxes are all laterally adjustable as at 126 and the plunger head 196 is I correspondingly laterally adjustable in the retainlngl head 194, as illustrated in Fig- ,l

ure 29.

It will alsobe observed that the members 188 and 172 are adjustably fulcrumed at 189 and, 173 so that absolute accuracy of movement of the parts effected by these While in the illustration made, lockA members is ensured.

notches 229 are provided for both the sta'-` tionary position of the table 18 and the two inch forwardly moved position of the table, it should be understood that cooperation of the lock detent 226 therewith is only necessary in case' dhapplying the long patch so that backwardlnjmovement of the table 18, before the saw carriage lhas been brought back Fto its normal position, is made impossible, see Figure 6. A l

-In Figure 25 is illustrated a slight modification of the invention and in this gure the abutment plate 149 of the deck 146 is i provided with an upward and laterally bevelled projection 231 adapted to lap over' the patch stock strip 233 at the end thereof which vis adapted to be cut oil to form the patch plug and in a manner whereby any tendency of the said end to rise as it is being cut is overcome. As above stated, this, projection is bevelled and, when vsuch construction is utilized, the fore end of the plungerl head 96 is also bevelled as Aat 232 to cooperate therewith so that the said head may engage as nearly as possible the entire length of the patch lug. Y

. -From the ibregoing description taken in connection with the accompanying drawings, it is thought that the novel details of construction, the operation and advantages of my invention will be readily apparent to those skilled in the'art to which it appertains. i

What I claim is:

`1. In a machine for patching pitch pockets, a recess cutting element for cutting and removing the pitch pockets out of the same means, and means for supporting the stock surface of the stock to be patched, thus providing a recess in the surface only of said stock,'means for fixing a patch into the recess formed by the cutting element in removing the pitch pocket, and means for operating the cutting element and the patch fixing means. n

2. In a machine for patching pitchpockets, a recess cutting element for cutting and removing the pitch pockets out of the same surface of the stock to be patched, thus providing a recess in the surface only of said stock, means for fixing a patch into the recess formed by the cutting element in removing the pitch pocket, means for operating the cutting element and the patch fixing to be patched in a freely movable manner before cutting and patching, and means for tightly holding the said stock during the cutting and patching thereof.

3. Ina machine for patching pitch pockets, a recess cutting element for cutting and removing the pitch pockets out of the same surface of the stock to be patched, thus providing a recess in the surface only of said stock, means for fixing a patchv into the recess formed by the cutting element` in removing the pitch pocket, means for operating the cutting element and the patch fixing means, means for adjusting the stroke of the cutting element, and means for adjusting the position of the patch fixing means to adapt the machine for applying abnormal sized patches.

4. In a machine for patching pitch pockets, a recess cutting element for cutting and removing the pitchpockets out of the same lsurface of the stock to be patched, thus providing a recessin the surface only of said stock, means for fiXin a patch into the recess formed by the'cutting element in removing the pitch pocket, means for operating the cutting element andthe patch fixing means, means for automatically feeding a continuous strip of patch stock into the machine in accordance with its needs, and means for cutting off the desired patch length from the strip to form the patch. E

5, In a machine for patching pitch pockets, a recess cutting element forcutting the pitch pockets out of the surface of the stock to be patched, means for fixing a patch into the recessformed by the cutting element in removing the pitch pocket, meansl for operating the cutting element and the patch fixing means, meansl for adjusting the stroke of the cutting element, means for adjusting 'the position of the patch fixing means to ada t the machines for applying abnormal size patches, and means-for automatically feedin a continuous strip of patch stock into t e -machine Lat intervals and in degrec equivalent to its needs as determinedA meegaan by the adjustment of the cutting element stroke and patch fixing means position, and means for cutting the desired patches from the stri in lengths corresponding to the degree ed and the defect removed.

v6. In a machine for patching pitch pockets, a recess cutting element for cutting and removing the pitch pockets out of the same surface of the stock to be patched, thus providing a recess in the surfaceA only of said stock, means for fixing a vpatch into the recess formed by the cutting element in removing the pitch pocket, means for operatingl the cutting element and the patch fixing means, means for supporting the stock to be patched in a freely movable manner before cutting and) patching, means for tightly holding the said stock duringthe cutting and patching thereof, means for automatically feeding a continuous strip of patching stock into the machine in accordance with its needs, and means for cutting off the desired patch length from the strip to form the patch. A

7. A machine of the class described comprising a recess cutting element for cutting Aand removing the defects from lthe same surface of the stock to be patched, thus providing a-re'cess in the surface only of said stock, means for feeding the stock to be patched to the cutting element, means for feeding patching stock into the machine, means for applying an adhesive substance to the patching stock While being fed, means for severing the patching stock in units of length equivalent to the recess formed by the cutting element in removing the defects,

and means for inserting the patch into the face of the stock to be patched, thus providing a recess in the surface only of said stock,means for feeding the stock tol be patched to the cutting element, means for feedingI patching stock into the machine, means for applying an adhesive substance to the patching stock While being fed, means for severing the patching stock in units of length e uivalent to the recessvformed by the cutting e ement in removing the defects, and means for inserting the patch into the said recess.

9. A machine of the class described comprising a recess cutting element for cutting and removing the defectsl from the same surface of the stock to be patched, thus proans for re- 

